I've had the SP3 (4gb) then SP4 (8gb). I sometimes chuck it in my bag along with my Macbook Pro when I need to sketch out problems at cafes. I also use it when

I've had the SP3 (4gb) then SP4 (8gb). I sometimes chuck it in my bag along with my Macbook Pro when I need to sketch out problems at cafes. I also use it when I'm coding frontend for the extra screen live reloading. There's an app called Synergy that allows me to use my Mac's trackpad to use the mouse and keyboard on it and works very well. So having this setup just in tablet mode without the type cover attached is a very nice small footprint extra screen. I have my dev setup on it as well but it's not as quick as my Macbook Pro. When I'm at home it usually just sits aside unused unless I want to read some book. I really like the quality of the Surface devices and if MS releases a quadcore Surface Book I would probably switch completely to that unless Apple releases a new line of 15 inch MacBooks without touchbar.